package com.hngy.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hngy.common.BaseContext;
import com.hngy.common.CustomException;
import com.hngy.dao.OrdersDao;
import com.hngy.domain.*;
import com.hngy.dto.OrdersDto;
import com.hngy.service.*;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;


import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * @author LiKe
 * @date 2021/12/29 18:49
 */
@Service
@Transactional
public class OrdersServiceImpl extends ServiceImpl<OrdersDao, Orders> implements OrdersService {
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private OrderDetailService orderDetailService;
    @Override
    public IPage<OrdersDto> ordersPage(int page, int pageSize, String number, String beginTime, String endTime) {
        //分页构造器
        IPage<Orders> ordersIPage = new Page<>(page,pageSize);

        LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.like(StringUtils.isNotEmpty(number),Orders::getNumber,number);
        queryWrapper.between(StringUtils.isNotEmpty(beginTime),Orders::getOrderTime,beginTime,endTime);
        queryWrapper.orderByDesc(Orders::getOrderTime);

        this.page(ordersIPage,queryWrapper);

        List<Orders> ordersList = ordersIPage.getRecords();
        List<OrdersDto> list = ordersList.stream().map((item)->{
            //订单的用户id
            Long userId = item.getUserId();
            //收货地址id
            Long addressBookId = item.getAddressBookId();

            User user = userService.getById(userId);
            AddressBook addressBook = addressBookService.getById(addressBookId);

            OrdersDto ordersDto = new OrdersDto();

            BeanUtils.copyProperties(item,ordersDto);
            if (user != null) {
                ordersDto.setPhone(user.getPhone());
                ordersDto.setUserName(user.getName());
            }
            if (addressBook != null) {
                ordersDto.setAddress(addressBook.getDetail());
                ordersDto.setConsignee(addressBook.getConsignee());
            }

            return ordersDto;
        }).collect(Collectors.toList());

        IPage<OrdersDto> iPage = new Page<>();
        BeanUtils.copyProperties(ordersIPage,iPage);
        iPage.setRecords(list);

        return iPage;
    }

    @Override
    public void saveOrders(Orders orders) {

        Long userId = BaseContext.getId();
        //查询当前用户的购物车数据
        LambdaQueryWrapper<ShoppingCart> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(wrapper);

        if(shoppingCarts == null || shoppingCarts.size() == 0){
            throw new CustomException("购物车为空，不能下单");
        }

        //查询用户数据
        User user = userService.getById(userId);

        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if(addressBook == null){
            throw new CustomException("用户地址信息有误，不能下单");
        }

        long orderId = IdWorker.getId();//订单号

        AtomicInteger amount = new AtomicInteger(0);

        //组装订单明细信息
        List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());

        //组装订单数据
        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));
        //向订单表插入数据，一条数据
        this.save(orders);

        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);

        //清空购物车数据
        shoppingCartService.remove(wrapper);


    }
}
